Method of recovering ethylene oxide

Details Method of recovering ethylene oxide Method of recovering ethylene oxide

C - Chemistry, Metallurgy

07

D

C07D 303/04 (2006.01) C07D 301/32 (2006.01)

Patent

CA 2157552

The present invention relates to a method of recovering ethylene oxide comprising the steps of: bringing a mixed gas containing ethylene oxide into contact with an absorbent so as to cause the absorbent to absorb the ethylene oxide; and stripping and separating said ethylene oxide to recover it from the absorbent, where the absorbent contains propylene carbonate. By employing the present invention, it is possible to reduce the heat recovery loss resulting from cooling the absorbent at the time of transfer from the stripping step to the absorption step, to about one-third that compared with a conventional system using water, without producing the by- product ethylene glycol.

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